6-Chloro-3-methyluracil
6-Chloro-3-methyluracil (CAS: 4318-56-3), with the molecular formula C5H5ClN2O2 and a molecular weight of 160.56 g/mol, is a halogenated pyrimidine derivative. It serves as a valuable building block in chemical synthesis and is relevant in the field of chemical biology. Its structure lends itself to applications in nucleoside chemistry and the synthesis of related derivatives.
- IUPAC
- 6-Chloro-3-methylpyrimidine-2,4(1H,3H)-dione
- Synonyms
- 6-Chloro-3-methylpyrimidine-2,4(1H,3H)-dione

Chemical Synthesis Intermediate
This compound acts as a key intermediate in the synthesis of more complex organic molecules. Its reactive chlorine atom and uracil core allow for diverse chemical transformations.
Nucleoside and Nucleotide Derivative Research
It is utilised in research focused on nucleobase, nucleoside, and nucleotide derivatives. This includes the synthesis of modified nucleosides for biochemical studies.
Chemical Biology Studies
The compound finds application in chemical biology research, potentially contributing to the development of probes or modified molecules for biological investigation.
| Molecular weight | 160.56 |
|---|---|
| Empirical formula | C5H5ClN2O2 |
| Assay | ≥98%≥98.0% (HPLC) |

Hazard statements
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P305IF IN EYES
| Protective equipment | dust mask type N95 (US), Eyeshields, Gloves |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 36/37/38 |
| Safety statements (S) | 26 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is 6-Chloro-3-methyluracil used for?
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6-Chloro-3-methyluracil (CAS: 4318-56-3) is used as an intermediate in chemical synthesis, particularly in the areas of chemical biology and nucleoside chemistry.
What are the CAS number and formula for 6-Chloro-3-methyluracil?
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The CAS number is 4318-56-3 and the molecular formula is C5H5ClN2O2.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 6-Chloro-3-methyluracil with a purity of ≥98% (HPLC). We do not represent this product as USP, BP, or EP grade.
How should 6-Chloro-3-methyluracil be handled?
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Handle with appropriate personal protective equipment including a dust mask type N95 (US), eyeshields, and gloves. Avoid breathing dust. Wash hands thoroughly after handling. Refer to the Safety Data Sheet for full details.
Is 6-Chloro-3-methyluracil a controlled substance?
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Based on the provided data, there is no indication that 6-Chloro-3-methyluracil is a controlled substance.
How is this chemical shipped and exported?
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Tech Serve Solutions is an experienced global supplier and exporter of fine chemicals, handling all packaging and shipping requirements in compliance with international regulations.
How can I request a sample or quote for 6-Chloro-3-methyluracil?
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Please contact our sales team via the website or direct enquiry to request a sample or a quote for 6-Chloro-3-methyluracil.
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